Fastener



F. s. CARR.

FASTENER.

APPLICATION FILED IAN. I6, |920.

Paten1ed11ug.9,1921.

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FRED s. CARR, or NEWTON, MASSACHUSETTS, ASSIGNOR, To ,CARR irrisrnnen l COMPANY, or canrnrnen, MASSACHUSETTS, a coaro'narron or MAINE FASTENER.

To all 'whom it may concern:

Be it known that I, FRED S; CARR, a citizen of the United States, and a resident of Newton, in the county of Middlesex, Commonwealth of VMassachusetts, have invented an Improvement in Fasteners, of which the.

following description, in connection with the accompanying-drawings, is a specification, like characters on the drawings representing like parts. j

This invention pertains to improvements in separable fasteners of the type wherein a stud member is adapted-to engage with a socket member carrying stud-engaging jaw means. I

rlhe preferred form of my invention shown in .the drawings of the present application provides a fastener in which the tendency to become disengaged vunder lateral strain is minimized, while at the Vsame time permitting the .facile disengagement of the parts when Separating strain is eX- erted in any direction which does not provide a substantial resultant force exerted in a lateral direction.

1n the drawings of the present invention Iy have shown a preferred embodiment of my invention resembling Vsomewhat the fastener shown in my pending vapplication Serial No. 307,111, filed June 27, 1919.

In the drawings Figure 1 is a front elevation of two pieces of material held together by'an illustrative embodiment of apreferred form Vof my invention, .parts of the fastener being shown in dotted lines;

Fig. 2 is a section on the Fig. l; j

Fig. 3 is a view showing several fasteners applied to two pieces of material to be held together; Y

Fig. 4 is a view of a `preferred form of .line y2 2 of socket, taken from the Vside thereof wherev the spring is exposed; and l Fig. 5 is a section on the line 5-5 of Fig. 4. v

I have found in practice that where theV form of fastener shown in my, copending application above referred to is correctly applied to the material, so that the line .of

lateral strain between stud and socket tends Vto move the stud in the socket toward one of the notched ends of the socket, a very secure lock is provided. The fastener shown in my copending application works satisspecification of Lettersrate'nt. 'i patented Application filed January 16, 1920. vserial No. 351,776.

Aug. 9, 1921.

factorily, even where `the .line ofstrain 'l ytween stud and socket is at a. considerable angle fromthat which would tend to move thestud directly toward one of the notched openings. .When, however, the socket is accidentally applied to the material in such a way that the line` of kstrain between stud and socket isex'actly or substantially exactly ninety degrees from kthe notched portion of the socket aperture, the. strain being exactly perpendicularjto the adjacent spring portion, the fastener shown in my copend- 'ing application .above referred'lto does not operate any better than any ordinary snap fastener in which separation is readily effected by any considerable strain in a. lateral direction. f

have found by experiment. that by positioning the springmeans in such a way Vas to be at an angle to a line passedl throughv the center of the 'socket aperture :and the-Av center of a cooperating notch inside thereof, a construction .is afforded in which a l very substantial lateralv locking is provided against separation of 'stud and socket by strain in any lateral direction. In the preferred form Vof my-,invention shown in the drawings, this result is attained because,

where strain is exertedVK between stud and socket in. a direction exactly perpendicular to an adjacent spring portion, such strain cannot bev exactly` perpendicular to a line passed throughthe center of a notch at the lcenter' of the aperture. Similarly, where vstrain between stud and socket is Lexerted in a direction exactly. perpendicular to a -line 'between thelcenter of the notch Vand `the centerA of theaperture, such strain` canfor the stud to be moved toward an' adja.

cent notch, the spring portion acting as a lcam Surfacetol promote vSuch movement.

llfhe foregoingimproved operation is 1 particularly noticeable where the fasteners are applied to fabric, providing a non-rigid support for the Stud andfsocket.Y

I have also found that the location of 'Y the spring under such a strain before the neck of the stud strikes the socket casing is greatly reduced.

' ln the preferred form of my invention shown inthe drawings, 6 represents a piece of fabric to which a stud 7 is secured, and 8 represents a 'piece of fabric to which a socket 9 is secured. rEhe stud 7 may be of usual form providing a head, a neck and an attaching portion which can be sewed to the goods, rlhe socket also may be adapted to be sewn to the goods in any usual manner. rlhe socket shown inthe drawings provides at one side a disk having an aperture there through which lis preferably notched at opposite ends, as shown in my copending application above referred to, and having spring means herein typified by the V-shaped spring l() p-roviding two spring portions adjacent .the aperture which are at an angle to a line passed through the center of a notch and the center of the aperture. rlhe notches are preferably so proportioned that the neck of the stud cannot touch the marginal portion of the notch at the end thereof, the bearing being at the side of the notch and the notches being proportioned so that the neck of the stud cannot enter into the notch a sufficient distance to oppose substantial strain exerted on stud and socket to separate them, which strain is ata substantial angle from any angle which is likely to result from lateral strain on the fabric to which the stud and'socket are applied.

v The socket illustrated in the present application is of the type which may be applied .tothe goods either side up. When the socket is applied tothe goods as shown in Fig. 2

with 'the side thereof having the stud-receiving aperture outwardly, .the fastener is a lateralv lock fastener. l/Vhen, however, the socket is applied to the goods with the side havingthe aperture next to the material and lthe stud entering from the opposite side,

then thc fastener is preferablyV not adapted to lock under lateral strain. This feature of my invention is, however, applicable to many constructions in whichthe spring arrange- Y ment may differimaterially from that hereinbefoi'e described, and for this reason l have elected to make claims to this featuiein Serial No. 351,777, filed Jany 176, 1920.

Vhile l have shown and described a preferred form of one embodiment of my invention, it will be yunderstood that changes involving omission, substitution, alteration and reversal of parts, and even changes in the mode of operation, may be made without departing from the scope of my invention, which is best defined in the following claims.

Claims:

l. A fastener comprising, in combination, a stud having a head and a neck, and a socket providing at one side thereof a studreceiving aperture providing a relatively shallow notch at at least one side-thereof, said socket having a spring portionintersecting at ieast' one side of said aperture at an angle relative to a line passing through the center of the aperture and the center of the notch.

2. fi. fastener comprising, in combination, a stud having a head and a neck, and a socket providing a stud-receiving aperture having notches adapted to resist separation of stud and socket by forces resultingffrom lateral'strain, said socket carrying a spring providing oppositely disposed stud-engaging arts adjacent said aperture, said stud-engaging parts intersecting a portion of each of said notches.

8. i stud and socket fastener comprising, in combination, a stud having a head and neck, and a 'socket providing a studreceiving aperture having notches and spring means positioned to cani said stud toward a notch when strain is exerted in a direction generally perpendicular to a line between said notches. i

ifi stud and socket fastener comprising, in combination, a stud and a socket, said socket having a stud-receiving aperture narrowed at one end to provide a notch, said notch relatively shallow and v,opposing sepa- L'on of stud andsocketby forces arising an strain exertedin a lateral direction 'bctween stud and socket, and a spring portion in said socket for caniniing said stud toward said notch when lateral strain is exerted bctween stud and socketin the general direction of but not directly toward said notch.

lin testimonyV whereof, l have signed my name to this specification. Y f

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